Quote:
Originally Posted by tmoble
>>> "i can get a scematic and run the wires so the pcm can read the a/c system presure right ?"
you would also need the sensors the CPU is reading. they'll be located somewhere on the plumbing of the OEM system.
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yep. its a 3 wire pressure sensor located next to the drier in every GM application ive seen.
In a unrelated note, when tuning OEM cars, I hook the wideband O2 sensor output to this AC pressure input.. that way i can log the "AC pressure" and actually log the wideband in sync with the PCM.
I wrote an article about this back in 2006
You can read it here.